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  #21  
Old 10-21-2017, 07:13 PM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
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What charge voltage do you see with this regulator?
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RV-12 N121TK ELSA #120845
First flight 06/10/2015
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  #22  
Old 10-22-2017, 03:10 PM
Dave12 Dave12 is offline
 
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Location: Elkton, Md.
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Quote:
Originally Posted by ramrod25 View Post
Would recommed NAPA Part# SME 7068102

About $100 bucks

Mount on cockpit side of firewall with a 12V computer fan blowing on regulator.

My fan is about 5" diameter wired to master switch.

Have been flying with this regulator for 18 months with no issues after my ducatti burned out.

Heat is the enemy of these regulators.

Regards
Ramrod25
Did the same thing a year ago/150 hrs. . I used a 30$ amazon clone and a two inch cooling fan that cost about 4$. The power come right off the hot terminal on the regulator. Switched by the master. Charge rate is typically 14.2 volts. Very satisfied so far.
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  #23  
Old 10-23-2017, 09:26 PM
ramrod25 ramrod25 is offline
 
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Location: Hugo
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Mine runs 14.7 volts at cruise rpm.

Rodney
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  #24  
Old 11-29-2017, 02:18 PM
bruceflys bruceflys is offline
 
Join Date: Aug 2014
Location: Ocala, FL (Leeward Air Ranch)
Posts: 97
Default John Deere Update

My wife's RV-12 ELSA originally had an under-the-panel $180 Ducati voltage regulator that lasted 120 hrs, followed by a JD $20 replacement that failed yesterday after 150 hrs.

Five minutes after takeoff I smelled hot electrical insulation, the EFIS lady screamed "warning," the voltage digital readout flashed red 29.9 volts, and I instinctively grabbed and removed the 30A generator fuse while wisps of smoke flowed from the center panel.

A friend flying from the left seat turned off the master switch and controlled the airplane while I tried to figure where to aim the fire extinguisher. Simultaneously I pondered why the light smoke continued with everything but the Dynon backup battery deactivated. Then I realized the generator fuse probably disconnected downstream of the VR, meaning the generator was still feeding it. Yanking the wires off the VR killed the smoke. We restored the master and flew home using the ship's battery.

Fortunately when I bought the JD unit, I bought a spare too. Also I installed nutplates to mount it. Putting in the spare, working only from under the panel took ten minutes. During a flight today, the new JD produced 14.1 vdc.

The first JD unit was a bit flakey during its life as the buss voltage varied from 14.0 to 14.4 vdc regardless of load. Its temperature also varied from warm to hot, but usually showed 140F on a non-contact thermometer. So when the voltage began to work higher over the last few flights, I thought that it was normal variation for this VR. Finally it settled at 14.7, which is the top of the charging range acceptable to Odyssey.

Now I realize that the rising output was warning of coming failure. When I see that again, I will prophylactically put in the new spare that I just ordered from Amazon.
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Last edited by bruceflys : 11-29-2017 at 02:21 PM.
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  #25  
Old 11-29-2017, 05:31 PM
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tomkk tomkk is offline
 
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I always thought heat was the biggest problem those V.R.s had (the heat they dissipated doing their job, not ambient temp they live in). Every V.R. I've tried, two Ducattis and, I think, three different J.D.s, have run too hot to touch. What I'm trying now is to mount a small computer cooling fan I had lying about directly to the V.R. I actually tie-wrapped it directly to the cooling fins, blowing air up into the fins. So far, the two V.R.s I've tried that both ran really cool. I guess we'll see how well the J.D. I have in now lasts.
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  #26  
Old 12-03-2017, 06:12 AM
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Skunkworks Skunkworks is offline
 
Join Date: Jun 2012
Location: Douglassville, PA
Posts: 55
Thumbs up 680hrs and still ticking Ducati voltage regulator

Made one change to fix this problem.
Cut a spoon shaped scoop on the end of the blast tube and made it stick out into the air stream.
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Last edited by Skunkworks : 12-03-2017 at 06:23 AM.
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  #27  
Old 12-21-2017, 03:31 PM
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MacPara MacPara is offline
 
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Location: Tucson, AZ
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Quote:
Originally Posted by bob1393 View Post
Good morning everyone. Our Ducati VR on our RV12 failed after only 223 hours of service. Now the second one has failed after 109 hours!! Both of them lasted about 10 months each.

I spoke to Van's technical dept. this morning and they are aware of the short life of this VR. Vans has discussed this with Rotax but there doesn't seem to be any action taken to correct the issue.

Other than the John Deere VR I've seen mentioned here on this forum, is there any other VR that someone would recommend that works well on the Rotax? Any info somebody has would be appreciated.

Thanks guys for your help.

Bob1393
Seems I'm a bit late to the party. If you're still looking for a replacement for the Duc VR:
http://torstensrv-12.blogspot.com/20...regulator.html

There's the whole story of my installation of the F4112 Silent Hektik VR. I am very happy with it. The Odyssey seems to like the higher Voltage of 14.7V in cruise and I haven't had any glitch ever since I put it in (~140 hours ago)
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  #28  
Old 12-21-2017, 06:04 PM
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tomkk tomkk is offline
 
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One of the problems with the SH VR, though, seems to be how to get one here in the States. Last I knew they didn't ship here.
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RV-12 N121TK ELSA #120845
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  #29  
Old 12-22-2017, 10:42 AM
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MacPara MacPara is offline
 
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Quote:
Originally Posted by tomkk View Post
One of the problems with the SH VR, though, seems to be how to get one here in the States. Last I knew they didn't ship here.
When the topic was hot a while ago in a different thread, I remember posting some links of shops that ship to the US. One was in the UK, I think. The search tool should be able to find this information.
Yup, found it. It wasn't me posting it but it was in the UK:
http://www.vansairforce.com/communit...28&postcount=3
Apparently, you can also find them on ebay from motorcycle shops.
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RV-12: #120374, ELSA, N128TL flying since Nov 28, 2013 (Phase 1 completed 1/26/14)
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http://torstensrv-12.blogspot.com/
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Last edited by MacPara : 12-22-2017 at 10:48 AM. Reason: added search results
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  #30  
Old 12-22-2017, 09:57 PM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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My first Ducati lasted 300 Hours on the engine side of the firewall. I have 370 Hours on the second in the same spot and itís still going strong. I put temp strips on them and they blackened up to the 180F marker. Donít ask me how, but they seem to hang in there even in the Phoenix heat. I guess you guys just havenít made the right blood sacrifice to the Ducati gods!😜
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